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Which of the following is a characteristics of stationary...

Which of the following is a characteristics of stationary waves?

A.

They are formed by two identical waves travelling in opposite directions

B.

they can be transverse or longitudinal

C.

The distance between two successive nodes is one wavelength

D.

The antinode is a point of minimum displacement

Correct answer is A

They are produced by the superposition of two progressive identical waves travelling in opposite directions